Sag Mill - Autogenous Grinding Mill
The optimal performance of AG/SAG mills is the key to successful plant operation. All AG/SAG mills using radial or curved pulp lifters suffer from inherent material transport problems such as slurry and pebble pooling, which decrease throughput and increase energy consumption. The TPL completely eliminates slurry pooling and pebble pooling problems and ensures the best grinding conditions, thus allowing AG/SAG mills to operate at maximum possible capacity with lower energy consumption.
SAG Mill Control and Optimization
Optimizing the performance of Semi-Autogenous mills (SAG mills) is our core focus. Our mineral processing experts have been increasing throughput and reducing specific power while preventing upsets for over 30 years. We use our vast experience and specialized tools to provide SAG mill specific strategies to the worlds foremost mineral processing companies. Our strategies are the best in the business.
SAG is an acronym for Semi-Autogenous Grinding, which means that it utilizes steel balls in addition to large rocks for grinding. The SAG mills use a minimal ball charge of 6 to 15%. It has a large diameter and short length. It rotates, tumbling its contents, causing a breaking action. The liner is made of wear resistant steel and fitted with lifters, which assist in raising the load as the mill rotates. The load consists of dry ore, steel balls and water, which occupies 30% of the volume. 8% of this volume is steel balls.
A SAG mill is characterized by its large diameter and short length. It rotates, tumbling its contents violently , causing a breaking action. The mill is lined with wear resistant steel liners which are fitted with lifters to assist with raising the load. The liners are replaced as they wear and the lifting action has degraded. The load - dry ore, steel balls and water - occupies approximately 30% of the volume. The steel grinding balls represent 8% of this volume. Fresh ore is continually conveyed into the mill feed chute and is crushed until small enough to pass though the openings in the discharge grates. The feed rate is limited by the horsepower available to turn the mill and the and the maximum weight the hydrostatic trunnion bearings which support the turning mill shell can withstand.